290 lines
10 KiB
C++
290 lines
10 KiB
C++
#include "BitmapCache.hpp"
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#include "libslic3r/Utils.hpp"
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#if ! defined(WIN32) && ! defined(__APPLE__)
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#define BROKEN_ALPHA
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#endif
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#ifdef BROKEN_ALPHA
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#include <wx/mstream.h>
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#include <wx/rawbmp.h>
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#endif /* BROKEN_ALPHA */
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#define NANOSVG_IMPLEMENTATION
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#include "nanosvg/nanosvg.h"
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#define NANOSVGRAST_IMPLEMENTATION
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#include "nanosvg/nanosvgrast.h"
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#include "GUI_App.hpp"
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namespace Slic3r { namespace GUI {
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void BitmapCache::clear()
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{
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for (std::pair<const std::string, wxBitmap*> &bitmap : m_map)
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delete bitmap.second;
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m_map.clear();
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}
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static wxBitmap wxImage_to_wxBitmap_with_alpha(wxImage &&image, float scale = 1.0f)
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{
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#ifdef BROKEN_ALPHA
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wxMemoryOutputStream stream;
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image.SaveFile(stream, wxBITMAP_TYPE_PNG);
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wxStreamBuffer *buf = stream.GetOutputStreamBuffer();
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return wxBitmap::NewFromPNGData(buf->GetBufferStart(), buf->GetBufferSize());
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#else
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#ifdef __APPLE__
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// This is a c-tor native to Mac OS. We need to let the Mac OS wxBitmap implementation
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// know that the image may already be scaled appropriately for Retina,
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// and thereby that it's not supposed to upscale it.
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// Contrary to intuition, the `scale` argument isn't "please scale this to such and such"
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// but rather "the wxImage is sized for backing scale such and such".
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return wxBitmap(std::move(image), -1, scale);
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#else
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return wxBitmap(std::move(image));
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#endif
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#endif
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}
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wxBitmap* BitmapCache::insert(const std::string &bitmap_key, size_t width, size_t height)
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{
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wxBitmap *bitmap = nullptr;
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auto it = m_map.find(bitmap_key);
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if (it == m_map.end()) {
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bitmap = new wxBitmap(width, height);
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m_map[bitmap_key] = bitmap;
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} else {
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bitmap = it->second;
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if (size_t(bitmap->GetWidth()) != width || size_t(bitmap->GetHeight()) != height)
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bitmap->Create(width, height);
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}
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#ifndef BROKEN_ALPHA
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bitmap->UseAlpha();
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#endif
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return bitmap;
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}
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wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp)
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{
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wxBitmap *bitmap = nullptr;
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auto it = m_map.find(bitmap_key);
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if (it == m_map.end()) {
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bitmap = new wxBitmap(bmp);
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m_map[bitmap_key] = bitmap;
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} else {
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bitmap = it->second;
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*bitmap = bmp;
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}
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return bitmap;
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}
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wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp, const wxBitmap &bmp2)
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{
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// Copying the wxBitmaps is cheap as the bitmap's content is reference counted.
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const wxBitmap bmps[2] = { bmp, bmp2 };
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return this->insert(bitmap_key, bmps, bmps + 2);
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}
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wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap &bmp, const wxBitmap &bmp2, const wxBitmap &bmp3)
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{
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// Copying the wxBitmaps is cheap as the bitmap's content is reference counted.
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const wxBitmap bmps[3] = { bmp, bmp2, bmp3 };
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return this->insert(bitmap_key, bmps, bmps + 3);
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}
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wxBitmap* BitmapCache::insert(const std::string &bitmap_key, const wxBitmap *begin, const wxBitmap *end)
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{
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size_t width = 0;
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size_t height = 0;
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for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
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width += bmp->GetWidth();
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height = std::max<size_t>(height, bmp->GetHeight());
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}
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#ifdef BROKEN_ALPHA
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wxImage image(width, height);
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image.InitAlpha();
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// Fill in with a white color.
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memset(image.GetData(), 0x0ff, width * height * 3);
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// Fill in with full transparency.
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memset(image.GetAlpha(), 0, width * height);
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size_t x = 0;
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for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
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if (bmp->GetWidth() > 0) {
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if (bmp->GetDepth() == 32) {
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wxAlphaPixelData data(*const_cast<wxBitmap*>(bmp));
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//FIXME The following method is missing from wxWidgets 3.1.1.
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// It looks like the wxWidgets 3.0.3 called the wrapped bitmap's UseAlpha().
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//data.UseAlpha();
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if (data) {
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for (int r = 0; r < bmp->GetHeight(); ++ r) {
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wxAlphaPixelData::Iterator src(data);
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src.Offset(data, 0, r);
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unsigned char *dst_pixels = image.GetData() + (x + r * width) * 3;
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unsigned char *dst_alpha = image.GetAlpha() + x + r * width;
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for (int c = 0; c < bmp->GetWidth(); ++ c, ++ src) {
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*dst_pixels ++ = src.Red();
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*dst_pixels ++ = src.Green();
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*dst_pixels ++ = src.Blue();
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*dst_alpha ++ = src.Alpha();
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}
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}
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}
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} else if (bmp->GetDepth() == 24) {
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wxNativePixelData data(*const_cast<wxBitmap*>(bmp));
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if (data) {
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for (int r = 0; r < bmp->GetHeight(); ++ r) {
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wxNativePixelData::Iterator src(data);
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src.Offset(data, 0, r);
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unsigned char *dst_pixels = image.GetData() + (x + r * width) * 3;
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unsigned char *dst_alpha = image.GetAlpha() + x + r * width;
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for (int c = 0; c < bmp->GetWidth(); ++ c, ++ src) {
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*dst_pixels ++ = src.Red();
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*dst_pixels ++ = src.Green();
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*dst_pixels ++ = src.Blue();
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*dst_alpha ++ = wxALPHA_OPAQUE;
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}
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}
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}
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}
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}
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x += bmp->GetWidth();
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}
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return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image)));
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#else
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wxBitmap *bitmap = this->insert(bitmap_key, width, height);
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wxMemoryDC memDC;
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memDC.SelectObject(*bitmap);
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memDC.SetBackground(*wxTRANSPARENT_BRUSH);
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memDC.Clear();
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size_t x = 0;
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for (const wxBitmap *bmp = begin; bmp != end; ++ bmp) {
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if (bmp->GetWidth() > 0)
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memDC.DrawBitmap(*bmp, x, 0, true);
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x += bmp->GetWidth();
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}
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memDC.SelectObject(wxNullBitmap);
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return bitmap;
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#endif
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}
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wxBitmap* BitmapCache::insert_raw_rgba(const std::string &bitmap_key, unsigned width, unsigned height, const unsigned char *raw_data, float scale /* = 1.0f */, const bool grayscale/* = false*/)
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{
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wxImage image(width, height);
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image.InitAlpha();
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unsigned char *rgb = image.GetData();
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unsigned char *alpha = image.GetAlpha();
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unsigned int pixels = width * height;
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for (unsigned int i = 0; i < pixels; ++ i) {
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*rgb ++ = *raw_data ++;
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*rgb ++ = *raw_data ++;
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*rgb ++ = *raw_data ++;
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*alpha ++ = *raw_data ++;
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}
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if (grayscale)
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image = image.ConvertToGreyscale(m_gs, m_gs, m_gs);
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return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image), scale));
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}
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wxBitmap* BitmapCache::load_png(const std::string &bitmap_name, unsigned width, unsigned height,
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const bool grayscale/* = false*/)
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{
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std::string bitmap_key = bitmap_name + ( height !=0 ?
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"-h" + std::to_string(height) :
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"-w" + std::to_string(width))
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+ (grayscale ? "-gs" : "");
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auto it = m_map.find(bitmap_key);
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if (it != m_map.end())
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return it->second;
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wxImage image;
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if (! image.LoadFile(Slic3r::GUI::from_u8(Slic3r::var(bitmap_name + ".png")), wxBITMAP_TYPE_PNG) ||
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image.GetWidth() == 0 || image.GetHeight() == 0)
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return nullptr;
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if (height != 0 && unsigned(image.GetHeight()) != height)
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width = unsigned(0.5f + float(image.GetWidth()) * height / image.GetHeight());
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else if (width != 0 && unsigned(image.GetWidth()) != width)
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height = unsigned(0.5f + float(image.GetHeight()) * width / image.GetWidth());
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if (height != 0 && width != 0)
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image.Rescale(width, height, wxIMAGE_QUALITY_BILINEAR);
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if (grayscale)
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image = image.ConvertToGreyscale(m_gs, m_gs, m_gs);
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return this->insert(bitmap_key, wxImage_to_wxBitmap_with_alpha(std::move(image)));
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}
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wxBitmap* BitmapCache::load_svg(const std::string &bitmap_name, unsigned target_width, unsigned target_height,
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float scale /* = 1.0f */, const bool grayscale/* = false*/)
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{
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std::string bitmap_key = bitmap_name + ( target_height !=0 ?
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"-h" + std::to_string(target_height) :
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"-w" + std::to_string(target_width))
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+ (scale != 1.0f ? "-s" + std::to_string(scale) : "")
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+ (grayscale ? "-gs" : "");
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target_height != 0 ? target_height *= scale : target_width *= scale;
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auto it = m_map.find(bitmap_key);
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if (it != m_map.end())
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return it->second;
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NSVGimage *image = ::nsvgParseFromFile(Slic3r::var(bitmap_name + ".svg").c_str(), "px", 96.0f);
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if (image == nullptr)
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return nullptr;
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float svg_scale = target_height != 0 ?
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(float)target_height / image->height : target_width != 0 ?
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(float)target_width / image->width : 1;
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int width = (int)(svg_scale * image->width + 0.5f);
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int height = (int)(svg_scale * image->height + 0.5f);
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int n_pixels = width * height;
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if (n_pixels <= 0) {
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::nsvgDelete(image);
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return nullptr;
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}
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NSVGrasterizer *rast = ::nsvgCreateRasterizer();
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if (rast == nullptr) {
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::nsvgDelete(image);
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return nullptr;
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}
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std::vector<unsigned char> data(n_pixels * 4, 0);
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::nsvgRasterize(rast, image, 0, 0, svg_scale, data.data(), width, height, width * 4);
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::nsvgDeleteRasterizer(rast);
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::nsvgDelete(image);
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return this->insert_raw_rgba(bitmap_key, width, height, data.data(), scale, grayscale);
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}
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wxBitmap BitmapCache::mksolid(size_t width, size_t height, unsigned char r, unsigned char g, unsigned char b, unsigned char transparency)
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{
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wxImage image(width, height);
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image.InitAlpha();
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unsigned char* imgdata = image.GetData();
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unsigned char* imgalpha = image.GetAlpha();
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for (size_t i = 0; i < width * height; ++ i) {
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*imgdata ++ = r;
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*imgdata ++ = g;
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*imgdata ++ = b;
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*imgalpha ++ = transparency;
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}
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return wxImage_to_wxBitmap_with_alpha(std::move(image));
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}
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} // namespace GUI
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} // namespace Slic3r
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